Heating-stove.



R. GAHOONE. HEATING STOVE.

APPL-IG ATION'IILED DE(J.1 1, 1906.

918,823. Patented Apr. 20, 1909.

2 SHEETS-SHEET 1;

awe/whoa THE NORRIS PETERS ca WASHINGTON, n. c.

EDWIN R. CAHOONE, OF TROY, NEW YORK.

HEATING-STOVE Specification of Letters Patent.

. Patented April 20, 1909.

Application filed December 11, 1905. Serial No. 291,337.

To all whom it may concern:

Be it known that I, EDWIN R. CAHooNE, citizen of the United States,residing at Troy, in the county of Rensselaer and State'of New York,have invented new and useful Improvements in Heating-Stoves, of whichthe following is a specification.

This invention relates to improvements in heating stoves for burningbituminous fuel.

The object of the invention is to provide specific means for forming airheating chambers at the top and the bottom of the fire pot to distributeheated air to the fuel to promote combustion.

A further object of the invention is to arrange the parts whereby thewhole structure may be cast in sections and assembled, producing aneconomical and effectual construction.

Other objects and advantages will be hereafter referred to andparticularly pointed out in the claims.

In the drawings Figure 1 is a vertical section of my improved stove apart of the base being in elevation. Fig. 2 is a similar view of aslightly different form ofmy invention a part of the base being inelevation. Fig. 3 is a detail horizontal section 011 the line 33, Fig.2.Fig. 4, is a horizontal section on the line 44, Fig. 2. Fig. 5, is adetail sectional view of a different form of joint between the drum andthe fire pot. Fig. 6 is a similar view of another form of joint. ,Fig.7, is a detail perspective view of the stove top and the means forsupporting the ornamental rmg. i H

1, represents a base, provided with. inwardly extending projections 2,on which are bolted or otherwise secured, supports 3, and resting onsaid supports is an annulus 4, provided with an upwardly extendingflange 5. A grate 6, is mounted on the annulus, and is of thereciprocating dumping type, and is usually closed or substantially sowhen the fuel is burning. p

A fire pot 7, is supported on the upper edge of the base 1, and itslower portion is reduced and flts within the flange 5. I Thereducedportion of the fire pot is or may beformed with a series of dependingfingers 9, andadjacent spaces 10, and above the fingers and spacedtherefrom are openings 11, which communicate with a space 12, formedbetween the reduced end of the fire pot'and the upper part of thebase 1. The flange 5, eX- tends into the. space 12 and is disposed.parts so that they may be cast.

.portion of the shield is perforated and spaced from the drum to form anair heating chamber 19, air being introduced thereto through ducts 20,located inside the drum and eXtend ing up to the stove top, where theycommunicate with a chamber 21, formed by a cover 22.

The construction described is adapted for use in a stove when theordinary sheet metal drum is employed, but I find I can make a moreeconomical structure and produce a less expensive stove by arranging thevarious struction is shown in Fig. 2. The drum 25, is cast and made insections 26-26, and an ornamental band 27", is or may be formed at thebottom. In'this figure the shield is also made slightly different. Itisprovided with a seat 28, to receive the upper end of a band 29, thelower portion of which fits into a seat 25 and is bolted to the fire pot7 at 25. The advantage of a structure of this type is that the drum isnot liable to rust and wear out quickly; furthermore the parts can beconveniently replaced.

A damper 29*, having arms 30, is supported on the top 16, and is adaptedto control the admission of air to the ducts 20. The arms are formedwith openings 31, and a handle 32, the latter passing through a slot inthe cover 22. Keepers 33, on the stove top serve to guide and keep thedamper in place.

In operation a fire is started in the fire pot, and air from the ash-pitpasses into the space 12, and is heated, the airbeing drawn through theopenings 11, and also through the spaces 10, by the draft, anddistributed to the fuel.

It is to facilitate the distribution of air coming from the ash pit thatI provide the ficient to promote combustion, an additional supply of airmay be taken into the space through the openings 38, regulated by theSuch a con-' fuel.

dam ers 39, air is thus taken in, preliminarily lieated, and divided andfurther, heated and introduced to the fire pot in a series of individualheated streams, attacking .the body of the fuel at different points. Theexit flue 39, being located near the top of the stove the air currentsare drawn through the body of the fuel and an incandescent mass isproduced.

The air heating chamber formed by the shield 17, is located at suchposition relative to the air inlets at the bottom of the fire pot, as toaccentuate the combustion when the air from said chamber is introducedto the Air entering the chamber 21,is slightly heated, and enterstheducts 20, and as the latter are located within the zone of the productsof combustion passing to the exit flue, obviously by the time the airreaches chamber 19, it is highly heated and is delivered to the fuelaround the bottom of the shield and through the numerous perforationstherein.

The various air currents introduced above the fuel meet and mingle withthe rising gases and the grade of combustion is materially improved.

What I claim is 1. In a heating stove, the combination with a base, of acasing, a grate, a fire pot having a reduced lower end provided withfingers and adjacent spaces, the reduced por- .tion of the fire potbeing spaced from the base and supported by the latter, a grate support;havin an upwardly extending flange extending in the space between thereduced portion of the fire pot and the base, means -lntroducing air tothe space, and an exit flue and spaces, the reduced portion of the fire45 pet being spaced from the base and supported by the latter, a gratesupport having an upwardly extending flange extending in-the spacebetween the reduced portion of the fire pot and the base, meansintroducing air to the space, and an exit fine abovethe fire pot.

3. In a heating stove, the combination with a base, of a casing, asubstantially closed grate, a fire pot formed with a reduced ower enciavin nin s a a series 0 l j l l g ope g nd f slots to provide fingersbelow-the openings, said reduced end being spaced from thebase andsupported by the latter, aflange extending upwardly into thespace'iormed between the reduced end ofthe fire pot and the base andextending entirely around said fire pot, means for introducing air tothe space at a point below the top of the flange, said air passingthrough the openings in the lower end of the'fire pot and the slotsbetween the fingers, meansforintrodueing currents of air hanging to thefire pot near the top of the latter, and an exit fine near the top ofthe stove.

4. In a stove, the combination with a base, a cast fire-pot, a castcasing in sections and supported on the fire-pot, a grate, an overdownwardly extending shield mounted within the firepot and forming withthe wall tliereoi an open bottom air heating chamber, an air heatingchamber at the top of the stove, duets located inside the casing andleading from the last mentioned air heating chamber to the air heatingchamber adjacent the shield, and an exit flue near the top of the stove.

5. In a stove, the combination with a casing, a base, a grate a fire potsupportml by and having an extension extending within the base andspaced therefrom and lOl'llltd with a series of openings arranged indill'erent planes at points below the top of the space formed betweenthe extension and. the base. a flange extending from the grate into thespace, means for introducing air to the space at a. point below the topof the flange, an overhanging shield extending into the the pot andspaced from the casing to form an air heating chamber, duets intioducingair to the latter chamber, and an exit llue near the. top or the stove.

6. In a stove, the combination with a cast casing formed with a seat, asupport litting in the seat and extending downwardly therefrom a lirepot having a seat to receive the downwardly extending portion of the support, and a shield. mounted on the support and extending upwardlytherefrom to abut against the casing.

7. In a stove, the combination with a. cast casing made in sections and.formed with an ornamental flange, an inwardly extending shield, a firepot, a detachable ring intermediate the fire pot, and the cast casing,said ring extending upwardly beyond the lire pot, means securing thering to the tire pot, the. portion of the ring extending beyond the firepot supporting the casing and the shield.

S. In av stove, the combination with a base, fire pot, having a reducedportion l'ormed with openings spaced from the base, a grate having aflange extending up above the lower reduced end of the fire pot, meansfor introducing air to the space formed. between the base and the end oithe fire pot, a shield. at the upper end of the fire pot and spaced.therefrom, means 'for supplying heated air to said latter space, and anexit llue located above the shield.

9. In a stove, the combination with a casing, a base, a fire pot havinga reduced lower end fitting within and spaced from the base and formedwith a series of notches and. openings above the notches, a grate, aflange in the space between the reduced end or" the 'fire pot and thebase, said. flange terminating at a point between the notches and theopen Eli] lOU

ill)

ill?) ings, means for supplying air to thes ace, a

shield located at the upper end of the 1re pot and s aced therefrom, theinner lower end of said s 'eld being grooved to receive ashes to protectit against heat influence, an air heating chamber, ducts connecting theair heating chamber and the s ace adjacent the shield, and an exit flueocated above the shield.

10. In a stove, the combination with a fire 0t, means for supplyingheated air to the ower end of the fire pot, a shield at the upper end ofthe fire pot and spaced therefrom to form a chamber, said shield beingformed in sections, and provided with inwardly tapering openings tointroduce jets of air to the fire pot from the chamber formed betweenthe shield and fire pot, an air heating chamber, ducts connecting theair heating chamber and the chamber formed adjacent the shield, and anexit flue located above the shield.

11. In a stove, the combination with a casing, a fire pot, a grate, anoverhanging shield formed with o enings at the upper end of the firepot, the oWer end of the shield being spaced from the fire pot to form achamber which is in open communication with said fire pot, anair'heating chamber above the shield, ducts connecting the air heatingchamber and the space adjacent the shield,

the air introduced to said space being divided, part passing directlydownwardly to the fuel and part passing through the o enings to the sideof the fuel, and an exit ue located above the shield.

12. In a stove, the combination with a casing formed of cast sections, acast fire pot, a grate, means for introducing air at the bottom of thefire pot, an overhanging shield formed in sections and provided withopenings the lower end of said shield being spaced from the fire pot toform a chamber which is in open communication with said fire pot,

means for supplying heated air to the space,

said air being divided, part assing downwardly toward the fuel, an partassin through the openings to the sides oft e fue and the exit fluelocated above the shield.

13. In a stove, the combination with a fire pot, a shield dependingwithin the fire pot, said shield being enlarged at its lower end andprovided with a groove to form a seat in which ashes accumulate toprevent the heat destroying said lower end. In testimony whereof I afiixmy signature, in presence of two subscribing witnesses.

EDWIN R. CAHOONE.

Witnesses:

FRANK SHRANDER, WILLIAM S. HOPKINS.

